. reporter: we learned that14-year-oldmarcusjohnsonwas also a sprint car driver. this memorial to him at his father's muffler shop has been growing since neighbors and friends learned of his death. the communities have been devastated by the tragedy. the start of the civil war sprint car series took a tragic turn friday night. in a practice run chase johnson lost control. kylely bumpus watched the car leave the track. >> we had